Tension and take-up mechanism for filling-carriers of looms.



Patented Feb. 6, 1912.

A. HAMMOND 6v S. E. TAFT. TENSION AND TAKE-UP MEGHANISM FOR FILLINGCARRIERS OF LOOMS.

APPLIOATION FILED mlm, 190s.

COLUMBIA PLANDGRAPH C0.,WASHINGTON, D. C.

UNITED sTATEs PATENT oEEIcE.

ROBERT A. HAMMOND, OF SANDWICH, AND SYDNEY E. TAFT, 0F SOUTH FRAMINGHAM,MASSACHUSETTS; SAID TAFT ASSIGNOR TO MASSACHUSETTS BELTINGr COMPANY,

A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Feb. 6, 1912.

Application filed February 5, 1908. Serial No. 414,345.

To all 'whom t may concern:

Be it known that we, ROBERT A. HAM- MOND, a citizen of the UnitedStates, residing at Sandwich, in the county of Barnstable and State ofMassachusetts, and SYDNEY E. TANT, a citizen of the United States,residing at South Framingham, in the county of Middlesex and State ofMassachusetts, have invented new and useful Improvements in Tension andTake-Up Mechanisms for Filling-Carriers of Looms, of which the followingis a specification.

This invention relates to a tension and take-up mechanism for fillingcarriers of looms in which a reel is employed to insert the weft orlling thread, the same being particularly adapted to be used inconnection with a machine for weaving a flat belt formed of heavylongitudinal and cross strands, for which applicants et al. have madeapplication for Letters Patent Serial No. 397,315, to which referencemay be had for the particular application of the present invention to anoperative machine.

The object of the invention is to take up the slack in the fillingthread or strand so as to keep the tension upon said filling strandeven. Such a device is especially necessary when the reel has passedthrough the shed andstarts upon its return movement to enter the shedagain, at which time there will be a surplus of filling thread, which,without a device of the character set forth, will become doubled up andbuckled, resulting in inferior work.

The invention consists in the combination and arrangement of parts setforth in the following specification and particularly pointed out in theclaims thereof.

Referring to the drawings: Figure 1 is a plan view of a filling carrierwith our improved take-up and tension device attached thereto. Fig. 2 isa sectional elevation taken on line LL of Fig. 1.

Like numerals refer to like parts throughout the several views of thedrawings.

In the drawings 61 is a reel journaled to rotate upon a hollow hub 245formed upon a slide or carrier 54 adapted to slide in a frame 57, andhaving a rack 53 fast thereto into which a gear 152 meshes, said gearbeing rotated by any suitable driving shaft. The slide 54 has a stud 246fastened thereto upon which is rotatably mounted a hub 247 to which anarm 248 is detachably fastened, the hub 247 and arm 248 constituting alever 249, which has a roll 250 journaled on its outer end. A torsionalspring 251 encircles the hub 247 and at its lower end is fastened to theslide 54, while its upper end projects into a slot 252 in the flange 253of the lever 249.

The filling 72 is wound upon the reel 61 and led from said reel around atension roll 254 rotatably mounted upon an arm 255 which is pivoted at256 to the guide-frame 7 5. The guide-frame 75 has two arms which arefastened to the slide 54.

The arm 255 consists of two plates 257, 257 and the tension roll 254 ismounted between said plates. A bolt 258 serves as a means whereby theplates 257 may be drawn toward each other and thus apply friction toprevent the tension roll 254 from rotating too freely. Adjacent to thetension roll 254 is a friction roll 259 rotatably mounted upon a bracket260 fast to the frame 75. An auxiliary guide-roll 261 is rotatablymounted upon a bracket 262 fast to the frame 75. Two guide-rolls 73, 73are rotatably mounted upon the guide frame 75 adjacent to each other.

The filling 72 passes from the reel 61 to the tension roll 254 andentirely around said tension roll, passing between the tension roll 254and the frictional roll 259. Said filling then passes to the auxiliaryroll 261, thence to the take-up roll 250, and from the takeup roll saidfilling passes between the pair of guide-rolls 73, 73 and thence throughthe shed. It will be noted that the take-up roll 250 bears against thefilling 72 upon the opposite side thereof from that against which theauxiliary guide-roll 261 contacts with said lling, and preferably saidtake-up roll engages the filling between the pair of guide-rolls 73 andthe auxiliary guide roll 261 and also engages said filling between thein full lines (Fig. 1). When the slide 54 and its reel 61 start toreturn through the shed, that is, in the direction opposite to the arrowa (Fig. 1) it will be seen that a considerable amount of slack will beobtained in the filling 72 and this slack will be taken up, as shown indotted lines, by the take-up 'lever 249, said lever passing to theposition shown in dotted lines and being moved into said position by thetorsional spring 251. When the lling is being. drawn through the shedand the tension placed thereon to draw up the filling taut in thefabric, the pull upon said filling will be in the direction of the arrowI) (Fig. 1), and such a pull will cause the arm 255 to rock upon itspivot 256 and press the filling between the tension roll 254 and thefriction roll 259, thus increasing the friction or. tension upon thelling at the time when said filling is being laid between the -warpstrands.

It will be understood that the take-up lever 249 moves into the positionshown in dotted lines (Fig. 1) when the reel and slide start upon thereturn movement through the shed and that as the filling is led throughthe shed and the reel passes, with its slide, to the opposite sidethereof, the tension upon the filling strand causes the slack therein tobe taken up, and the take-up lever is then drawn back to the positionillustrated in full llines (Fig. 1) against the action of the torsionalspring 251.

By the construction described in which the arm 248 is made separate fromthe hub 247 of the lever 249, it is evident'that said arm can be readilyremoved from the hub and the reel taken ofi the hub 245 without removingthe hub 247 of the lever 249 or disarranging the spring 251, by removingthe screw 263. V Y Having thus described our invention, what we claimand desire by Letters Patent to secure is:

`l1. In a loom, a reel for the filling, a carrier upon which said reelis journaled, guiderollssupported on said carrier, and a takeup leverpivotally supported on said carrier, concentric with said reel, wherebythe tension on said filling thread may be regulated.

2. In a loom, a reel for the filling, a carrier upon which said reel isjournaled, a pair of guide-rolls, an auxiliary guide-roll for saidfilling supported on said carrier, and a take-up lever pivotallysupported on said carrier concentric with said reel and adapted toengage said filling between said pair of guide-rolls and said auxiliaryguide-roll. .Y 3. In a loom, a reel for the filling, a carrier uponwhich said reel is journaled, guide-rolls supported on said carrier, atakeup lever pivotally supported on said carrier concentric with saidreel, and a spring connected to said lever, whereby the tension on saidfilling may be regulated.

4. In a loom, a reel for the filling, a carrier upon which said reel isjournaled, a pair of guide-rolls for said filling supported on saidcarrier, a tension roll, an arm pivotally supported on said carrier uponwhich said tension roll is journaled, and a take-up lever pivotallysupported on said carrier concentric with said reel and adapted toengage said filling between said pair of rolls and said tension roll.

5. In a loom, a reel for the lling, a car 4rier upon which said reel isjournaled, a

pair of guide rolls for said filling supported on said carrier, atension roll, an arm pivotally supported on said carrier upon which saidtension roll is journaled, a friction roll against which said tensionroll is adapted to press said filling, and a take-up lever pivotallysupported on said carrier concentric with said reel and adapted toengage said filling between said pair of rolls and said tension roll.

6. In a loom, a reel for the filling, a canrier upon which said reel isjournaled, a pair of guides between which said filling is adapted topass while the same is passing from said reel into the shed, a thirdguide arranged between said pair of guides and said reel, and a take-updevice engaging said lling between said pair of guides and said thirdguide and adapted to take up the slack in said filling.

7. In a loom, a reel for the filling, a carrier upon which said reel isjournaled, a guide mounted on said carrier adapted to guide said fillingwhile the same is passing from said reel into the shed, a frictionaltension device supported on said carrier and engaging said fillingbetween said reel and said guide, and a take-up device acting upon theslack in said filling independently of said device.

8. In a loom, a reel for the filling, a carrier upon which said reel isjournaled, a pair of guides for said filling upon said carrier, atension device supported on said carrier adapted to engage said filling,and a take-up lever pivotally supported on said carrier and adapted toengage said filling between said pair of guides and said tension device.

9. In a loom, a reel for the filling, a carrier upon which said reel isjournaled, a guide for said lling supported on said carrier, a tensiondevice supported on said carset our hands in presence of two subscribingrier adapted to engage said filling, a memwitnesses. ber against whichsaid tension device is adapted to press seid lling, and a take-up devicesupported 0n said carrier and adapted to engage said filling betweensaid guide Witnesses: and said member. CHARLES S. GOODING,

In testimony whereof we have hereunto FREDERICK E. WILLIAMS.

ROBERT A. HAMMOND. SYDNEY E. TAFT.

Copies of this patent may be obtained for ive cents each, 'by addressingthe Commissioner of Patents, WashingtomD. C.

